/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:04:59,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:04:59,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:04:59,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:04:59,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:04:59,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:04:59,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:04:59,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:04:59,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:04:59,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:04:59,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:04:59,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:04:59,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:04:59,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:04:59,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:04:59,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:04:59,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:04:59,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:04:59,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:04:59,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:04:59,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:04:59,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:04:59,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:04:59,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:04:59,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:04:59,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:04:59,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:04:59,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:04:59,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:04:59,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:04:59,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:04:59,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:04:59,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:04:59,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:04:59,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:04:59,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:04:59,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:04:59,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:04:59,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:04:59,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:04:59,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:04:59,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:04:59,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:04:59,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:04:59,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:04:59,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:04:59,570 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:04:59,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:04:59,571 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:04:59,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:04:59,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:04:59,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:04:59,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:04:59,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:04:59,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:04:59,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:04:59,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:04:59,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:04:59,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:04:59,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:04:59,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:04:59,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:04:59,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:04:59,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:04:59,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:04:59,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:04:59,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:04:59,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:04:59,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:04:59,577 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:04:59,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:04:59,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:04:59,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:04:59,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:04:59,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:04:59,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:04:59,983 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:04:59,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 00:05:00,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4aa9d458/27d361ac9d804dec964bebdc2e7a6284/FLAG7b9672c89 [2020-10-28 00:05:00,768 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:05:00,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 00:05:00,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4aa9d458/27d361ac9d804dec964bebdc2e7a6284/FLAG7b9672c89 [2020-10-28 00:05:00,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4aa9d458/27d361ac9d804dec964bebdc2e7a6284 [2020-10-28 00:05:00,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:05:00,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:05:00,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:05:00,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:05:00,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:05:00,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:05:00" (1/1) ... [2020-10-28 00:05:01,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c97c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:00, skipping insertion in model container [2020-10-28 00:05:01,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:05:00" (1/1) ... [2020-10-28 00:05:01,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:05:01,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:05:01,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:05:01,846 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:05:02,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:05:02,125 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:05:02,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:02 WrapperNode [2020-10-28 00:05:02,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:05:02,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:05:02,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:05:02,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:05:02,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:02" (1/1) ... [2020-10-28 00:05:02,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:02" (1/1) ... [2020-10-28 00:05:02,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:02" (1/1) ... [2020-10-28 00:05:02,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:02" (1/1) ... [2020-10-28 00:05:02,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:02" (1/1) ... [2020-10-28 00:05:02,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:02" (1/1) ... [2020-10-28 00:05:02,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:02" (1/1) ... [2020-10-28 00:05:02,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:05:02,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:05:02,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:05:02,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:05:02,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:05:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:05:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:05:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:05:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:05:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:05:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:05:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:05:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:05:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:05:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:05:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:05:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:05:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:05:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:05:02,432 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:05:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:05:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:05:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:05:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:05:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:05:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:05:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:05:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:05:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:05:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:05:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:05:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:05:04,324 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:05:04,327 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:05:04,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:05:04 BoogieIcfgContainer [2020-10-28 00:05:04,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:05:04,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:05:04,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:05:04,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:05:04,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:05:00" (1/3) ... [2020-10-28 00:05:04,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f85b1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:05:04, skipping insertion in model container [2020-10-28 00:05:04,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:02" (2/3) ... [2020-10-28 00:05:04,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f85b1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:05:04, skipping insertion in model container [2020-10-28 00:05:04,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:05:04" (3/3) ... [2020-10-28 00:05:04,344 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 00:05:04,358 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:05:04,364 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:05:04,378 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:05:04,426 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:05:04,427 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:05:04,427 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:05:04,427 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:05:04,427 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:05:04,427 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:05:04,427 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:05:04,428 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:05:04,460 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states. [2020-10-28 00:05:04,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 00:05:04,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:04,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:05:04,478 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:04,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:04,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1279329481, now seen corresponding path program 1 times [2020-10-28 00:05:04,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:04,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958311684] [2020-10-28 00:05:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:05,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:05,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:05,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:06,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:06,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:08,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:09,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:09,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:09,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:09,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:09,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 00:05:09,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:05:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 00:05:09,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:09,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:05:09,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 00:05:09,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 00:05:09,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:05:10,586 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:05:10,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:10,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:10,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:10,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 00:05:10,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:05:10,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958311684] [2020-10-28 00:05:10,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:10,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:05:10,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415472171] [2020-10-28 00:05:10,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:05:10,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:10,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:05:10,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:05:10,686 INFO L87 Difference]: Start difference. First operand 451 states. Second operand 4 states. [2020-10-28 00:05:11,492 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:05:15,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:15,192 INFO L93 Difference]: Finished difference Result 704 states and 1242 transitions. [2020-10-28 00:05:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:05:15,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-28 00:05:15,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:15,216 INFO L225 Difference]: With dead ends: 704 [2020-10-28 00:05:15,216 INFO L226 Difference]: Without dead ends: 543 [2020-10-28 00:05:15,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:05:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-10-28 00:05:15,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 537. [2020-10-28 00:05:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-28 00:05:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 711 transitions. [2020-10-28 00:05:15,342 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 711 transitions. Word has length 55 [2020-10-28 00:05:15,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:15,345 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 711 transitions. [2020-10-28 00:05:15,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:05:15,345 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 711 transitions. [2020-10-28 00:05:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 00:05:15,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:15,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:05:15,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:05:15,356 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:15,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:15,360 INFO L82 PathProgramCache]: Analyzing trace with hash 142088305, now seen corresponding path program 1 times [2020-10-28 00:05:15,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:15,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029601359] [2020-10-28 00:05:15,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:15,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:15,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:16,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:16,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:17,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:19,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:20,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:20,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 00:05:20,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:05:20,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:05:20,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:20,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:05:20,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 00:05:20,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 00:05:20,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:21,205 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:05:21,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:21,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:21,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:21,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:21,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:21,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:05:21,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:21,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:21,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:21,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:05:21,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029601359] [2020-10-28 00:05:21,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:21,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:05:21,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599106184] [2020-10-28 00:05:21,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:05:21,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:21,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:05:21,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:05:21,263 INFO L87 Difference]: Start difference. First operand 537 states and 711 transitions. Second operand 4 states. [2020-10-28 00:05:21,957 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:05:24,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:24,431 INFO L93 Difference]: Finished difference Result 936 states and 1291 transitions. [2020-10-28 00:05:24,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:05:24,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-28 00:05:24,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:24,438 INFO L225 Difference]: With dead ends: 936 [2020-10-28 00:05:24,438 INFO L226 Difference]: Without dead ends: 716 [2020-10-28 00:05:24,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:05:24,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-28 00:05:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 710. [2020-10-28 00:05:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 710 states. [2020-10-28 00:05:24,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 958 transitions. [2020-10-28 00:05:24,511 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 958 transitions. Word has length 55 [2020-10-28 00:05:24,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:24,511 INFO L481 AbstractCegarLoop]: Abstraction has 710 states and 958 transitions. [2020-10-28 00:05:24,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:05:24,512 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 958 transitions. [2020-10-28 00:05:24,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 00:05:24,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:24,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:05:24,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:05:24,516 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:24,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:24,517 INFO L82 PathProgramCache]: Analyzing trace with hash 635922101, now seen corresponding path program 1 times [2020-10-28 00:05:24,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:24,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625920078] [2020-10-28 00:05:24,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:24,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:24,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:24,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:25,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:25,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:25,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:26,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:27,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:27,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:29,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:29,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 00:05:29,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:05:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:05:29,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:29,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:05:29,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 00:05:29,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 00:05:29,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:30,280 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:05:30,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:30,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:30,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:30,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:30,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:30,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 00:05:30,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:30,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:05:30,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625920078] [2020-10-28 00:05:30,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:30,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:05:30,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237210629] [2020-10-28 00:05:30,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:05:30,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:30,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:05:30,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:05:30,344 INFO L87 Difference]: Start difference. First operand 710 states and 958 transitions. Second operand 4 states. [2020-10-28 00:05:31,195 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:05:34,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:34,021 INFO L93 Difference]: Finished difference Result 1364 states and 1895 transitions. [2020-10-28 00:05:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:05:34,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-28 00:05:34,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:34,028 INFO L225 Difference]: With dead ends: 1364 [2020-10-28 00:05:34,028 INFO L226 Difference]: Without dead ends: 1037 [2020-10-28 00:05:34,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:05:34,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2020-10-28 00:05:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1030. [2020-10-28 00:05:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2020-10-28 00:05:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1402 transitions. [2020-10-28 00:05:34,085 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1402 transitions. Word has length 55 [2020-10-28 00:05:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:34,085 INFO L481 AbstractCegarLoop]: Abstraction has 1030 states and 1402 transitions. [2020-10-28 00:05:34,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:05:34,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1402 transitions. [2020-10-28 00:05:34,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 00:05:34,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:34,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:05:34,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:05:34,089 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:34,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:34,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1643620536, now seen corresponding path program 1 times [2020-10-28 00:05:34,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:34,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873843561] [2020-10-28 00:05:34,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:34,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:34,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:34,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:34,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:34,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:35,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:35,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:36,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:36,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:36,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:37,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:37,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:38,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:38,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:39,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:39,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:39,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 00:05:39,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:05:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 00:05:39,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:05:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:05:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:05:39,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:39,947 WARN L193 SmtUtils]: Spent 707.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:05:39,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:39,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:39,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:39,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:39,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:05:39,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:39,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:39,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:05:40,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873843561] [2020-10-28 00:05:40,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:40,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:05:40,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520528850] [2020-10-28 00:05:40,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:05:40,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:40,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:05:40,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:05:40,004 INFO L87 Difference]: Start difference. First operand 1030 states and 1402 transitions. Second operand 6 states. [2020-10-28 00:05:42,975 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:05:44,374 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:05:44,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:44,538 INFO L93 Difference]: Finished difference Result 2992 states and 4259 transitions. [2020-10-28 00:05:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:05:44,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-28 00:05:44,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:44,552 INFO L225 Difference]: With dead ends: 2992 [2020-10-28 00:05:44,552 INFO L226 Difference]: Without dead ends: 2519 [2020-10-28 00:05:44,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:05:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2519 states. [2020-10-28 00:05:44,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2519 to 1042. [2020-10-28 00:05:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-28 00:05:44,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1406 transitions. [2020-10-28 00:05:44,638 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1406 transitions. Word has length 55 [2020-10-28 00:05:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:44,638 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1406 transitions. [2020-10-28 00:05:44,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:05:44,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1406 transitions. [2020-10-28 00:05:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 00:05:44,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:44,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:05:44,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:05:44,641 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:44,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:44,642 INFO L82 PathProgramCache]: Analyzing trace with hash -923257110, now seen corresponding path program 1 times [2020-10-28 00:05:44,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:44,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310709871] [2020-10-28 00:05:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:44,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:44,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:45,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:45,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:45,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:46,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:46,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:46,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:46,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:48,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:48,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:49,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:49,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 00:05:49,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:05:49,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:05:49,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:49,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:05:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:05:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 00:05:49,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:50,488 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:05:50,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:50,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:50,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:50,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:05:50,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:50,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:50,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:50,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:50,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:05:50,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310709871] [2020-10-28 00:05:50,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:50,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:05:50,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788305645] [2020-10-28 00:05:50,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:05:50,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:50,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:05:50,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:05:50,552 INFO L87 Difference]: Start difference. First operand 1042 states and 1406 transitions. Second operand 6 states. [2020-10-28 00:05:53,486 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:05:55,091 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:05:55,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:55,328 INFO L93 Difference]: Finished difference Result 2954 states and 4195 transitions. [2020-10-28 00:05:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:05:55,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-28 00:05:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:55,340 INFO L225 Difference]: With dead ends: 2954 [2020-10-28 00:05:55,341 INFO L226 Difference]: Without dead ends: 2555 [2020-10-28 00:05:55,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:05:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2020-10-28 00:05:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 1068. [2020-10-28 00:05:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-10-28 00:05:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1434 transitions. [2020-10-28 00:05:55,424 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1434 transitions. Word has length 56 [2020-10-28 00:05:55,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:55,426 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1434 transitions. [2020-10-28 00:05:55,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:05:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1434 transitions. [2020-10-28 00:05:55,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 00:05:55,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:55,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:05:55,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:05:55,430 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:55,430 INFO L82 PathProgramCache]: Analyzing trace with hash 578275121, now seen corresponding path program 1 times [2020-10-28 00:05:55,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:55,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803373255] [2020-10-28 00:05:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:55,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:55,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:55,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:56,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:57,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:57,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:58,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:00,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:00,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 00:06:00,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:06:00,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:06:00,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 00:06:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:06:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:06:00,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:01,354 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:06:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:01,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:01,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:01,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:01,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:06:01,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:01,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:06:01,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803373255] [2020-10-28 00:06:01,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:01,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 00:06:01,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584329527] [2020-10-28 00:06:01,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 00:06:01,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:01,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 00:06:01,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-28 00:06:01,414 INFO L87 Difference]: Start difference. First operand 1068 states and 1434 transitions. Second operand 9 states. [2020-10-28 00:06:02,260 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2020-10-28 00:06:05,697 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:06:08,922 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:06:09,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:09,184 INFO L93 Difference]: Finished difference Result 3038 states and 4234 transitions. [2020-10-28 00:06:09,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 00:06:09,186 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-28 00:06:09,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:09,199 INFO L225 Difference]: With dead ends: 3038 [2020-10-28 00:06:09,199 INFO L226 Difference]: Without dead ends: 2572 [2020-10-28 00:06:09,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-10-28 00:06:09,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2020-10-28 00:06:09,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1202. [2020-10-28 00:06:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-10-28 00:06:09,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1622 transitions. [2020-10-28 00:06:09,312 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1622 transitions. Word has length 56 [2020-10-28 00:06:09,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:09,313 INFO L481 AbstractCegarLoop]: Abstraction has 1202 states and 1622 transitions. [2020-10-28 00:06:09,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 00:06:09,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1622 transitions. [2020-10-28 00:06:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 00:06:09,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:09,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:06:09,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:06:09,316 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:09,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2032832996, now seen corresponding path program 1 times [2020-10-28 00:06:09,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:09,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605793046] [2020-10-28 00:06:09,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:09,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:09,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:09,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:09,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:10,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:10,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:10,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:13,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:14,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:14,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 00:06:14,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:06:14,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:06:14,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:14,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:06:14,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:06:14,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:06:14,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:15,206 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:06:15,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:15,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:15,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:15,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:15,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:06:15,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:15,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:15,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:15,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:15,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:15,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:06:15,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605793046] [2020-10-28 00:06:15,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:15,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:06:15,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362350009] [2020-10-28 00:06:15,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:06:15,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:15,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:06:15,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:06:15,240 INFO L87 Difference]: Start difference. First operand 1202 states and 1622 transitions. Second operand 7 states. [2020-10-28 00:06:16,002 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:06:18,369 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-28 00:06:19,125 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:06:19,864 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:06:20,611 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:06:22,393 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:06:23,139 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 00:06:23,899 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:06:24,879 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-28 00:06:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:24,947 INFO L93 Difference]: Finished difference Result 6022 states and 8462 transitions. [2020-10-28 00:06:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 00:06:24,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-28 00:06:24,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:24,974 INFO L225 Difference]: With dead ends: 6022 [2020-10-28 00:06:24,975 INFO L226 Difference]: Without dead ends: 5030 [2020-10-28 00:06:24,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-28 00:06:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5030 states. [2020-10-28 00:06:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5030 to 3829. [2020-10-28 00:06:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3829 states. [2020-10-28 00:06:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3829 states to 3829 states and 5323 transitions. [2020-10-28 00:06:25,330 INFO L78 Accepts]: Start accepts. Automaton has 3829 states and 5323 transitions. Word has length 56 [2020-10-28 00:06:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:25,331 INFO L481 AbstractCegarLoop]: Abstraction has 3829 states and 5323 transitions. [2020-10-28 00:06:25,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:06:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 3829 states and 5323 transitions. [2020-10-28 00:06:25,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 00:06:25,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:25,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:06:25,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:06:25,335 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:25,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:25,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1254435865, now seen corresponding path program 1 times [2020-10-28 00:06:25,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:25,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540614467] [2020-10-28 00:06:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:25,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:25,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:25,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:25,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:25,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:25,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:26,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:28,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:28,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:28,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:28,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:29,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:29,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:30,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:30,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 00:06:30,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 00:06:30,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:06:30,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:06:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:06:30,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 00:06:30,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:31,079 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:06:31,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:31,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:31,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:31,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:31,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:31,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:06:31,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:31,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:31,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:31,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:31,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:31,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:06:31,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540614467] [2020-10-28 00:06:31,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:31,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:06:31,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060786901] [2020-10-28 00:06:31,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:06:31,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:31,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:06:31,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:06:31,128 INFO L87 Difference]: Start difference. First operand 3829 states and 5323 transitions. Second operand 6 states. [2020-10-28 00:06:33,394 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:06:34,896 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:06:35,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:35,365 INFO L93 Difference]: Finished difference Result 12441 states and 17586 transitions. [2020-10-28 00:06:35,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:06:35,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-28 00:06:35,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:35,410 INFO L225 Difference]: With dead ends: 12441 [2020-10-28 00:06:35,410 INFO L226 Difference]: Without dead ends: 9763 [2020-10-28 00:06:35,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:06:35,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9763 states. [2020-10-28 00:06:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9763 to 3295. [2020-10-28 00:06:35,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3295 states. [2020-10-28 00:06:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3295 states to 3295 states and 4568 transitions. [2020-10-28 00:06:35,830 INFO L78 Accepts]: Start accepts. Automaton has 3295 states and 4568 transitions. Word has length 56 [2020-10-28 00:06:35,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:35,830 INFO L481 AbstractCegarLoop]: Abstraction has 3295 states and 4568 transitions. [2020-10-28 00:06:35,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:06:35,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3295 states and 4568 transitions. [2020-10-28 00:06:35,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 00:06:35,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:35,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:06:35,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:06:35,835 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:35,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:35,835 INFO L82 PathProgramCache]: Analyzing trace with hash -713618091, now seen corresponding path program 1 times [2020-10-28 00:06:35,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:35,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794386263] [2020-10-28 00:06:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:35,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:36,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:36,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:36,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:37,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:37,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:37,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:38,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:39,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:39,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:39,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:40,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:40,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:40,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 00:06:40,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 00:06:40,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:06:40,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 00:06:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:06:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 00:06:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:41,869 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:06:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:41,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:41,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:41,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:41,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:06:41,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:41,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:41,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:06:41,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794386263] [2020-10-28 00:06:41,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:41,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 00:06:41,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854483085] [2020-10-28 00:06:41,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 00:06:41,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:41,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 00:06:41,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-28 00:06:41,919 INFO L87 Difference]: Start difference. First operand 3295 states and 4568 transitions. Second operand 11 states. [2020-10-28 00:06:43,793 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 331 DAG size of output: 329 [2020-10-28 00:06:46,701 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:06:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:49,136 INFO L93 Difference]: Finished difference Result 6321 states and 8892 transitions. [2020-10-28 00:06:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 00:06:49,136 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-28 00:06:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:49,161 INFO L225 Difference]: With dead ends: 6321 [2020-10-28 00:06:49,161 INFO L226 Difference]: Without dead ends: 6315 [2020-10-28 00:06:49,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-10-28 00:06:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6315 states. [2020-10-28 00:06:49,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6315 to 3309. [2020-10-28 00:06:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3309 states. [2020-10-28 00:06:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4589 transitions. [2020-10-28 00:06:49,617 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4589 transitions. Word has length 57 [2020-10-28 00:06:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:49,618 INFO L481 AbstractCegarLoop]: Abstraction has 3309 states and 4589 transitions. [2020-10-28 00:06:49,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 00:06:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4589 transitions. [2020-10-28 00:06:49,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 00:06:49,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:49,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:06:49,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:06:49,622 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:49,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:49,623 INFO L82 PathProgramCache]: Analyzing trace with hash 760248850, now seen corresponding path program 1 times [2020-10-28 00:06:49,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:49,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952253001] [2020-10-28 00:06:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:49,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:49,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:49,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:49,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:50,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:51,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:51,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:52,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:52,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:54,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:54,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 00:06:54,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:06:54,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:06:54,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:54,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 00:06:54,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:06:54,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 00:06:54,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:55,588 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:06:55,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:55,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:55,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:55,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:55,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:06:55,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:55,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:55,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:06:55,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952253001] [2020-10-28 00:06:55,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:55,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 00:06:55,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553937370] [2020-10-28 00:06:55,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 00:06:55,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:55,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 00:06:55,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 00:06:55,632 INFO L87 Difference]: Start difference. First operand 3309 states and 4589 transitions. Second operand 9 states. [2020-10-28 00:06:56,460 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2020-10-28 00:06:58,981 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-28 00:07:00,787 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:07:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:07:01,684 INFO L93 Difference]: Finished difference Result 13519 states and 19113 transitions. [2020-10-28 00:07:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 00:07:01,685 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-28 00:07:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:07:01,711 INFO L225 Difference]: With dead ends: 13519 [2020-10-28 00:07:01,712 INFO L226 Difference]: Without dead ends: 11223 [2020-10-28 00:07:01,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-28 00:07:01,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11223 states. [2020-10-28 00:07:02,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11223 to 3341. [2020-10-28 00:07:02,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3341 states. [2020-10-28 00:07:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3341 states to 3341 states and 4626 transitions. [2020-10-28 00:07:02,128 INFO L78 Accepts]: Start accepts. Automaton has 3341 states and 4626 transitions. Word has length 57 [2020-10-28 00:07:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:07:02,128 INFO L481 AbstractCegarLoop]: Abstraction has 3341 states and 4626 transitions. [2020-10-28 00:07:02,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 00:07:02,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3341 states and 4626 transitions. [2020-10-28 00:07:02,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 00:07:02,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:07:02,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:07:02,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:07:02,132 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:07:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:07:02,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1260563959, now seen corresponding path program 1 times [2020-10-28 00:07:02,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:07:02,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559750630] [2020-10-28 00:07:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:07:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:02,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:02,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:02,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:03,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:03,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:03,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:04,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:06,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:07,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:07,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 00:07:07,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:07:07,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:07:07,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 00:07:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:07:07,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 00:07:07,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:08,026 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:07:08,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:07:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:08,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:08,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:07:08,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:07:08,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:07:08,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:07:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:07:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:07:08,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:07:08,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559750630] [2020-10-28 00:07:08,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:07:08,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 00:07:08,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240767916] [2020-10-28 00:07:08,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 00:07:08,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:07:08,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 00:07:08,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-28 00:07:08,065 INFO L87 Difference]: Start difference. First operand 3341 states and 4626 transitions. Second operand 10 states. [2020-10-28 00:07:08,881 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2020-10-28 00:07:11,461 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:07:14,105 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:07:15,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:07:15,219 INFO L93 Difference]: Finished difference Result 13521 states and 19065 transitions. [2020-10-28 00:07:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 00:07:15,220 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-28 00:07:15,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:07:15,253 INFO L225 Difference]: With dead ends: 13521 [2020-10-28 00:07:15,253 INFO L226 Difference]: Without dead ends: 11708 [2020-10-28 00:07:15,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2020-10-28 00:07:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11708 states. [2020-10-28 00:07:15,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11708 to 3344. [2020-10-28 00:07:15,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3344 states. [2020-10-28 00:07:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 4629 transitions. [2020-10-28 00:07:15,667 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 4629 transitions. Word has length 57 [2020-10-28 00:07:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:07:15,667 INFO L481 AbstractCegarLoop]: Abstraction has 3344 states and 4629 transitions. [2020-10-28 00:07:15,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 00:07:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 4629 transitions. [2020-10-28 00:07:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 00:07:15,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:07:15,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:07:15,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:07:15,672 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:07:15,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:07:15,672 INFO L82 PathProgramCache]: Analyzing trace with hash 423295220, now seen corresponding path program 1 times [2020-10-28 00:07:15,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:07:15,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300962863] [2020-10-28 00:07:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:07:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:15,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:15,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:16,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:17,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:17,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:17,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:18,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:20,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:20,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 00:07:20,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:07:20,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:07:20,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:07:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:07:20,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 00:07:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:21,518 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:07:21,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:07:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:21,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:21,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:21,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:07:21,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:07:21,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:07:21,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:07:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:07:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:07:21,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:07:21,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300962863] [2020-10-28 00:07:21,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:07:21,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:07:21,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807507796] [2020-10-28 00:07:21,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:07:21,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:07:21,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:07:21,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:07:21,568 INFO L87 Difference]: Start difference. First operand 3344 states and 4629 transitions. Second operand 6 states. [2020-10-28 00:07:22,357 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:07:25,256 WARN L193 SmtUtils]: Spent 727.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:07:26,385 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:07:29,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:07:29,732 INFO L93 Difference]: Finished difference Result 22038 states and 31519 transitions. [2020-10-28 00:07:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:07:29,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-28 00:07:29,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:07:29,779 INFO L225 Difference]: With dead ends: 22038 [2020-10-28 00:07:29,779 INFO L226 Difference]: Without dead ends: 19691 [2020-10-28 00:07:29,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:07:29,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19691 states. [2020-10-28 00:07:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19691 to 7802. [2020-10-28 00:07:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7802 states. [2020-10-28 00:07:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7802 states to 7802 states and 11089 transitions. [2020-10-28 00:07:30,747 INFO L78 Accepts]: Start accepts. Automaton has 7802 states and 11089 transitions. Word has length 57 [2020-10-28 00:07:30,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:07:30,747 INFO L481 AbstractCegarLoop]: Abstraction has 7802 states and 11089 transitions. [2020-10-28 00:07:30,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:07:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 7802 states and 11089 transitions. [2020-10-28 00:07:30,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 00:07:30,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:07:30,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:07:30,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:07:30,754 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:07:30,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:07:30,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1042627350, now seen corresponding path program 1 times [2020-10-28 00:07:30,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:07:30,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142969023] [2020-10-28 00:07:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:07:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:30,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:30,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:31,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:31,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:31,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:31,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:35,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:35,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 00:07:35,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:07:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 00:07:35,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:07:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 00:07:35,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:07:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:36,659 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:07:36,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:07:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:36,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:36,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:36,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:07:36,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:07:36,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 00:07:36,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:07:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:07:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:07:36,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:07:36,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142969023] [2020-10-28 00:07:36,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:07:36,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:07:36,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704848833] [2020-10-28 00:07:36,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:07:36,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:07:36,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:07:36,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:07:36,713 INFO L87 Difference]: Start difference. First operand 7802 states and 11089 transitions. Second operand 4 states. [2020-10-28 00:07:38,994 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 312 [2020-10-28 00:07:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:07:40,352 INFO L93 Difference]: Finished difference Result 8875 states and 12581 transitions. [2020-10-28 00:07:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:07:40,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-28 00:07:40,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:07:40,371 INFO L225 Difference]: With dead ends: 8875 [2020-10-28 00:07:40,371 INFO L226 Difference]: Without dead ends: 7628 [2020-10-28 00:07:40,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:07:40,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7628 states. [2020-10-28 00:07:41,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7628 to 7625. [2020-10-28 00:07:41,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7625 states. [2020-10-28 00:07:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7625 states to 7625 states and 10525 transitions. [2020-10-28 00:07:41,454 INFO L78 Accepts]: Start accepts. Automaton has 7625 states and 10525 transitions. Word has length 58 [2020-10-28 00:07:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:07:41,454 INFO L481 AbstractCegarLoop]: Abstraction has 7625 states and 10525 transitions. [2020-10-28 00:07:41,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:07:41,455 INFO L276 IsEmpty]: Start isEmpty. Operand 7625 states and 10525 transitions. [2020-10-28 00:07:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 00:07:41,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:07:41,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:07:41,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:07:41,460 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:07:41,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:07:41,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1361405647, now seen corresponding path program 1 times [2020-10-28 00:07:41,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:07:41,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417843702] [2020-10-28 00:07:41,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:07:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:41,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:41,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:41,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:41,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:41,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:42,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:42,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:42,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:43,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:43,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:43,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:44,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:44,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:44,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:45,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:45,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:45,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:46,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:46,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 00:07:46,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 00:07:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:07:46,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:07:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:07:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:07:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:47,242 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:07:47,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:07:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:47,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:47,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:07:47,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:07:47,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 00:07:47,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:07:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:07:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:07:47,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:07:47,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417843702] [2020-10-28 00:07:47,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:07:47,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:07:47,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399138898] [2020-10-28 00:07:47,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:07:47,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:07:47,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:07:47,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:07:47,350 INFO L87 Difference]: Start difference. First operand 7625 states and 10525 transitions. Second operand 6 states. [2020-10-28 00:07:48,183 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:07:50,821 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:07:51,601 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:07:56,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:07:56,397 INFO L93 Difference]: Finished difference Result 33892 states and 48108 transitions. [2020-10-28 00:07:56,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:07:56,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-28 00:07:56,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:07:56,541 INFO L225 Difference]: With dead ends: 33892 [2020-10-28 00:07:56,542 INFO L226 Difference]: Without dead ends: 29369 [2020-10-28 00:07:56,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:07:56,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29369 states. [2020-10-28 00:07:58,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29369 to 14072. [2020-10-28 00:07:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14072 states. [2020-10-28 00:07:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14072 states to 14072 states and 19676 transitions. [2020-10-28 00:07:58,453 INFO L78 Accepts]: Start accepts. Automaton has 14072 states and 19676 transitions. Word has length 58 [2020-10-28 00:07:58,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:07:58,453 INFO L481 AbstractCegarLoop]: Abstraction has 14072 states and 19676 transitions. [2020-10-28 00:07:58,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:07:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand 14072 states and 19676 transitions. [2020-10-28 00:07:58,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 00:07:58,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:07:58,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:07:58,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:07:58,458 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:07:58,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:07:58,459 INFO L82 PathProgramCache]: Analyzing trace with hash 694835889, now seen corresponding path program 1 times [2020-10-28 00:07:58,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:07:58,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062581411] [2020-10-28 00:07:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:07:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:58,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:58,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:58,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:58,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:59,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:59,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:00,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:00,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:01,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:01,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:02,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:03,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:03,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 00:08:03,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:08:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:08:03,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:08:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:08:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 00:08:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:04,277 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:08:04,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:08:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:04,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:04,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:04,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:08:04,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:08:04,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:08:04,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:08:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:08:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:08:04,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:08:04,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062581411] [2020-10-28 00:08:04,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:08:04,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:08:04,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545328080] [2020-10-28 00:08:04,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:08:04,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:08:04,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:08:04,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:08:04,318 INFO L87 Difference]: Start difference. First operand 14072 states and 19676 transitions. Second operand 6 states. [2020-10-28 00:08:05,121 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:08:07,865 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-28 00:08:08,700 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:08:16,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:08:16,948 INFO L93 Difference]: Finished difference Result 62161 states and 88838 transitions. [2020-10-28 00:08:16,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:08:16,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-28 00:08:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:08:17,023 INFO L225 Difference]: With dead ends: 62161 [2020-10-28 00:08:17,023 INFO L226 Difference]: Without dead ends: 51610 [2020-10-28 00:08:17,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:08:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51610 states. [2020-10-28 00:08:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51610 to 24970. [2020-10-28 00:08:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24970 states. [2020-10-28 00:08:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24970 states to 24970 states and 35117 transitions. [2020-10-28 00:08:21,029 INFO L78 Accepts]: Start accepts. Automaton has 24970 states and 35117 transitions. Word has length 58 [2020-10-28 00:08:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:08:21,030 INFO L481 AbstractCegarLoop]: Abstraction has 24970 states and 35117 transitions. [2020-10-28 00:08:21,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:08:21,030 INFO L276 IsEmpty]: Start isEmpty. Operand 24970 states and 35117 transitions. [2020-10-28 00:08:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 00:08:21,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:08:21,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:08:21,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:08:21,036 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:08:21,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:08:21,036 INFO L82 PathProgramCache]: Analyzing trace with hash -2126264466, now seen corresponding path program 1 times [2020-10-28 00:08:21,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:08:21,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106517738] [2020-10-28 00:08:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:08:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:21,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:21,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:21,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:21,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:22,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:26,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:26,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 00:08:26,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:08:26,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 00:08:26,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:08:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:08:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 00:08:26,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:26,861 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-28 00:08:26,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:08:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:26,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:26,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:26,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:08:26,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:08:26,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:08:26,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:08:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:08:26,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:08:26,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:08:26,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106517738] [2020-10-28 00:08:26,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:08:26,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:08:26,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499144527] [2020-10-28 00:08:26,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:08:26,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:08:26,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:08:26,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:08:26,894 INFO L87 Difference]: Start difference. First operand 24970 states and 35117 transitions. Second operand 6 states. [2020-10-28 00:08:27,616 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:08:30,597 WARN L193 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-28 00:08:31,886 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 309